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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello everyone,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am trying to use Powell optimizer with VersorRigid3D
transform. But it seems that it will get errors when I start the registration
step. Does this optimizer not get along with versor transform or is there any
specific parameter have to be set? <o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thank you very much,<o:p></o:p></span></font></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face="Times New Roman"><span style='font-size:10.0pt'>_____________________________________________</span></font>&nbsp;<o:p></o:p></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Huanxiang Lu</span></font><o:p></o:p></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Ph.D. Student,
Medical Image Analysis</span></font><o:p></o:p></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><ns0:place
 w:insAuthor="Miguel A. Gonzalez Ballester" w:insDate="2009-02-10T15:45:00Z"
 w:endInsAuthor="Miguel A. Gonzalez Ballester" w:endInsDate="2009-02-10T15:45:00Z"><ns0:PlaceType
  w:insAuthor="Miguel A. Gonzalez Ballester" w:insDate="2009-02-10T15:45:00Z"
  w:endInsAuthor="Miguel A. Gonzalez Ballester"
  w:endInsDate="2009-02-10T15:45:00Z">University</ns0:PlaceType> of <ns0:PlaceName
  w:insAuthor="Miguel A. Gonzalez Ballester" w:insDate="2009-02-10T15:45:00Z"
  w:endInsAuthor="Miguel A. Gonzalez Ballester"
  w:endInsDate="2009-02-10T15:45:00Z">Bern</ns0:PlaceName></ns0:place><o:p></o:p></span></font></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>ARTORG Center for
Biomedical Engineering Research&nbsp;<o:p></o:p></span></font></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span lang=DE style='font-size:10.0pt;font-family:Arial'>Stauffacherstrasse
78<o:p></o:p></span></font></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span lang=DE style='font-size:10.0pt;font-family:Arial'>CH-3014
Bern<o:p></o:p></span></font></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span lang=DE style='font-size:10.0pt;font-family:Arial'>Tel +41 31
631 59 49</span></font><o:p></o:p></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span lang=DE style='font-size:10.0pt;font-family:Arial'>Fax +41 31
631 59 60<o:p></o:p></span></font></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span lang=DE style='font-size:10.0pt;font-family:Arial'><a
href="mailto:huanxiang.lu@artorg.unibe.ch"
title="mailto:serena.bonaretti@artorg.unibe.ch">huanxiang.lu@artorg.unibe.ch</a></span></font><o:p></o:p></p>

<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><a
href="http://www.artorg.unibe.ch/" title="http://www.artorg.unibe.ch/">www.artorg.unibe.ch/</a></span></font><o:p></o:p></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

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